Intercalation of Potassium and Bromine into Carbon Blacks

Abstract

Intercalation of potassium and bromine into furnace blacks with different heat-treatmenttemperatures (HTTs) has been investigated. Potassium can be intercalated into carbon blacks irrespective of their HTTs; the saturated compound has the stage 1 structure. The observed isotherms for carbon black-bromine system show that the amount of bromine fixed by carbon black is less than 10% of that by graphite. The electrical resistance of residue compounds is larger than that of pristine materials for HTT≤1500°C but smaller for HT≥2000°C Such behavior is discussed in connection with the structure of host carbon blacks.